9 gauge steel is .1563 inches or 3.97 mm thick.
6 gauge aluminum is 0.1620 inches thick.
0.1495 inches thick.
26 guage = 0.0165", which is a bit more than 1/64" in fractions. Four sheets of 26 guage aluminum laid on top of each other would measure about 1/16" thick.
11 gauge steel is 0.125 inches thick.
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